Satellite roller screws are high precision linear devices, that faithfully transform rotary movement into a linear movement. By design they are similar to ball screws but with the difference that the ball bearings are replaced by threaded rollers, which are constantly engaged with the threads of the screw. The resulting higher number of contact points within the nut, means that both heavier loads can be accepted, product life is considerably elongated and extremely accurate linear positioning can be achieved. www.abssac.co.uk